at 11:00 p.m. on may 1st, 2011, two black hawk helicopters, 23 navy s.e.a.l.s, a translator and a dog named cairo took off from jalalabad, afghanistan. the mission, to kill the world's most wanted man, osama bin laden. >> death of bin laden marks the most significant achievement to date in our nation's effort to defeat al qaeda. >> most have heard the incredible details of the bin laden compound raid, but little has been revealed about the intense, months' long deliberation that led to the final decision to act. so how was the decision made? who was told? how did they weigh the options? tonight we will ask the man tasked by the president to synthesize the intelligence, analyze the assessments, and run the decision-making process, to act in a sense as gatekeeper of this monumental decision.